How to drain the pit of concrete rings

The principle of the cesspool

waste on a sloping sewer of life are held in receiving chamber and there is allocated to the heavy and light components.The fecal water tanks are neutralized in the process of fermentation, oxidation and lose their chemical activity.Therefore, when they are released into the soil is not so harmful to ground waters.

With the passage of time in the first part, where the accumulated sludge, liquid level reaches the overflow, which should be placed above the entrance.The heavier waste components are deposited on the bottom and are decomposed by bacteria in the sludge.The liquid is poured through the connecting pipe to an adjacent tank, in which there is a filtering bottom.Periodically, the system should be cleaned with sanitation.

If you decide to make a cesspool of concrete rings, you can buy a special concrete with pre-cut input-output ports.For the first tank where solid wastes are deposited, concrete rings have bottomed.

To build a normal fully functional septic tank, it is necessary to 5-9 rings.If you live in a house 2-4 people, it is sufficient to 5 rings if up to 6 people, you will need 9 rings

component of the project sewer system: the scheme

scheme - the most important thing in setting up the sewer system.From the correctness of its preparation depends on the comfort of living in the country and the effectiveness of environmental protection.In addition, planning the location cesspool, it should be noted that there should be free access to the sewage truck drives.All the subtleties of device you should consider in advance, because then alter treatment facilities will be very difficult, if no impossible.

If treated wastewater is planned down to the nearest body of water, it should be coordinated with the SES and in accordance with SanPiN requirements, must be equipped with an additional unit for tertiary treatment and disinfection of wastewater.Septic Tank should be placed on the site so that the distance between residential buildings is not less than 5 m, and the water wells up at least 30 m.

How to calculate the required volume of the sump?

calculation is not complicated.When buying concrete rings is already known amount of each type.It is enough to multiply the known volume of the number of rings.If the amount is not known, it is necessary to use the formula of a hollow cylinder volume:

V = πD2H / 4

V- volume is desired, D -dimetr concrete ring in meters, of H is the height.

Sometimes it is easier to see the corresponding certain type of ring volume table value: For COP 10.9 corresponds to the volume of 0.71 cubic meters, for the COP-15.9 - 1.59 cubic meters, for the X-20.9 - 2.83 cubic metersStands type rings as follows: for example, take Kc 10.9, is 10 - is the diameter in decimetres, that is, the diameter is equal to 1.0 meters, and height - this is the second digit after the decimal point, ie,9 - 90 cm.

calculate the number of rings, you should not forget about the ceiling, which will close the cesspool.It is a concrete slab with a hole for the hatch.Luke can be purchased ready-made, such as a polymer.

process of building sump

1. digs two pit.
2. If concrete ring was not possible to buy a bottom, the bottom of the pit should be the first pour of concrete mixed with gravel.The bottom must be 10 cm thick. All the work to complete the monolithic bottom will take about a week.
3. With the help of a crane set the rings on each other.Moreover, it is necessary to think about waterproofing, paving between the rubber and the joints should be sealed concreting.After all dry, liquid glass is applied on top.
4. second hole bottom is not necessary to do, and the rings are put directly on the ground.However, it is desirable to pre-fill gravel, drainage and to get a kind of filter.So the ring will not sink much into the sodden ground.
5. lay pipes in the trench to a depth of 1 m and with a slope of 2-3%.
6. Install ceiling and ventilation hatches.This will require two tubes with a diameter of 10 cm and a height of 48 cm and 70
7. septic inner wall to cover also be mixed with concrete waterglass.This will prevent the leakage of sewage into the soil through the joints.
8. to more efficient operation of the septic tank and activate the decomposition of waste can settle into drains bacteria that are fully disinfected waste.